Answer:
When mechanical waves strike a barrier, at least part of the energy of the waves will be reflected back into the media from which they came.
Explanation:
Organic compounds;
- Carbohydrates lipids and nucleic acids
- contained in living organisms
- Molecules that contain carbon and hydrogen bonds
Inorganic molecules;
- Sometimes contain carbon but do not contain C-H bonds
- Molecules made of a combination of elements
- Water and table salts
<h3>What is an organic molecule?</h3>
An organic molecule are the molecules that contain long chains of carbon and are studied as part of organic chemistry. Inorganic compounds do not contain catenated carbon chains and are studied as part of inorganic chemistry.
Let us now classify the compounds;
Organic compounds;
- Carbohydrates lipids and nucleic acids
- contained in living organisms
- Molecules that contain carbon and hydrogen bonds
Inorganic molecules;
- Sometimes contain carbon but do not contain C-H bonds
- Molecules made of a combination of elements
- Water and table salts
Learn more about organic compounds:brainly.com/question/5994723
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Answer: 2.25
Explanation: 1:1 mole ratio seen in equation.
<span>Density is a value for
mass, such as kg, divided by a value for volume, such as m3. Density is a
physical property of a substance that represents the mass of that substance per
unit volume. For gases we use the ideal gas equation to solve for density. We do as follows:
PV = nRT
PV = mRT / MM
Density = m/V = PMM / RT
From the conditions given of the O2 system we can determine P/RT as follows:
P/RT = density / MM = 1.30 / 32
P/RT = 0.0406
density of propane = 0.0406 x 44.11 = 1.79 g/L</span>